Thevana gives a questionable look at Echidna, but quickly tilts her head up as if she was enlighted.

"Ah no no. You have this reversed. It is not me wants something from you. It's you who want's something from me, right?"

There was an amusing tone in her voice, as if she was in complete control.

"I'll be frank, so long as you work for me I don't care what you do in your free time. And I've heard you're looking for powerful weapons. Now other might not know why, but I do. So I thought, 'hey, I once in awhile I do get these ridiculous missions with these dumb weapons as rewards which I have no use for. Maybe I can just throw them at someone who actually wants them'"

Thevana walks closer to Echidna, as she examines the multiple sacks of treasure you found, until she stopped to look at where the crystal you has previously found was kept.

"I just wanted to see if you were actually good enough to survive them. That's all really. By the way, mind handing me that crystal and your sword?"

Her voice is strong and commanding and you already establish that she means no harm, even if she did, you are confident enough that you could snap her neck before she could even rise the blade. So you hand them to her.

She puts the crystal next to the blade and seems to enter into a trance. You can feel the magic of the crystal going wild and melting into the blade.

"There I upgraded your weapon. I should have a few surprises for you. Though you will have to find them by yourself."